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    • 4. 发明公开
    • VERFAHREN ZUR VERSCHLÜSSELTEN DATENÜBERTRAGUNG IN DER PROZESSAUTOMATISIERUNGSTECHNIK
    • VERFAHREN ZURVERSCHLÜSSELTENDATENÜBERTRAGUNGIN DER PROZESSAUTOMATISIERUNGSTECHNIK
    • EP3140971A1
    • 2017-03-15
    • EP14724056.8
    • 2014-05-06
    • VEGA Grieshaber KG
    • ISENMANN, AndreasGAISER, MartinFEHRENBACH, JosefDECK, Thomas
    • H04L29/06H04L9/08H04L29/08
    • H04L63/062H04L9/0822H04L9/0833H04L63/0428H04L67/12
    • The invention relates to a method for encrypted data transfer in process automation technology, wherein the encrypted data transfer is carried out between at least one field device (30, 40, 50) and at least one internet server (10). The method comprises the following steps: forming an encrypted connection (21) between the field device (30, 40, 50) and a key server (20) using a key which is not device-specific and which is recorded on the key server (20) and in the field device (30, 40, 50); transferring data to record a key that is specific to the field device (30, 40, 50) on the key server (20), wherein the transfer between the field device (30, 40, 50) and the key server (20) is carried out using the non-device-specific key recorded on the key server (20); and transferring further data between the field device (30, 40, 50) and the internet server (10) using a connection (31, 41, 51) encrypted by the key specific to the field device (30, 40, 50)
    • 本发明涉及一种用于过程自动化技术中的加密数据传输的方法,其中在至少一个现场设备(30,40,50)和至少一个因特网服务器(10)之间执行加密的数据传输。 该方法包括以下步骤:在现场设备(30,40,50)和密钥服务器(20)之间使用不是设备特定的密钥并将其记录在密钥服务器(20)上形成加密连接(21) 20)和现场设备(30,40,50)中; 传送数据以在密钥服务器(20)上记录特定于现场设备(30,40,50)的密钥,其中现场设备(30,40,50)和密钥服务器(20)之间的传输是 使用记录在密钥服务器(20)上的非设备专用密钥进行; 以及使用由所述现场设备(30,40,50)特定的密钥加密的连接(31,41,51)在所述现场设备(30,40,50)和所述因特网服务器(10)之间传送进一步的数据,